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Proceedings Paper

Monitoring structural damage using a wave vibration approach
Author(s): C. Mei; B. Antar; E. Wang
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Paper Abstract

A vibration-based monitoring process is proposed that adopts a different viewpoint than modal-based methods currently practiced. In addition to the usual modal characterization, vibrations can also be described as traveling waves, which propagate in a continuous structure and are reflected and transmitted at a structural discontinuity. While modal responses depend on the global properties of the structure, the reflection and transmission characteristics depend only on the local properties of the structural damage. As a result, structural health monitoring based on wave vibration characteristics is more sensitive and reliable. In this paper, the wave based vibration approach is applied in monitoring both a cracked structural element and a cracked structural joint. Numerical examples are presented.

Paper Details

Date Published: 11 April 2006
PDF: 12 pages
Proc. SPIE 6174, Smart Structures and Materials 2006: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, 61741P (11 April 2006); doi: 10.1117/12.660036
Show Author Affiliations
C. Mei, Univ. of Michigan, Dearborn (United States)
B. Antar, Univ. of Michigan, Dearborn (United States)
E. Wang, Univ. of Michigan, Dearborn (United States)


Published in SPIE Proceedings Vol. 6174:
Smart Structures and Materials 2006: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems
Masayoshi Tomizuka; Chung-Bang Yun; Victor Giurgiutiu, Editor(s)

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